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Heat and Mass Transfer

Heat and Mass Transfer
Heat is closely related with

Entropy
Temperature
Energy
Liquids

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Heat and Mass Transfer
The unit of Stefan Boltzmann constant is

watt/cm3 °K
watt2/cm °K⁴
watt/cm4 °K
watt/cm2 °K⁴

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Heat and Mass Transfer
The concept of overall coefficient of heat transfer is used in heat transfer problems of

Convection
Radiation
Conduction
Conduction and convection

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Heat and Mass Transfer
When heat is transferred from hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by

Conduction
Conduction and convection
Radiation
Convection

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Heat and Mass Transfer
A non-dimensional number generally associated with natural convection heat transfer is

Weber number
Grashoff number
Prandtl number
Nusselt number

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Heat and Mass Transfer
In regenerator type heat exchanger, heat transfer takes place by

Direct mixing of hot and cold fluids
Generation of heat again and again
Flow of hot and cold fluids alternately over a surface
A complete separation between hot and cold fluids

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